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Rolling tachyon with electric and magnetic fields: T -duality approach

Rolling tachyon with electric and magnetic fields: T -duality approach We study the decay of unstable D p -branes when the world-volume gauge field is turned on. We obtain the relevant D p -brane boundary state with electric and magnetic fields by boosting and rotating the rolling tachyon boundary state of a D ( p - 1 ) -brane and then T dualizing along one of the transverse directions. A simple recipe to turn on the gauge fields in the boundary state is given. We find that the effect of the electric field is to parametrically enhance the coupling of closed string oscillation modes along the electric field direction and provide an intuitive understanding of the result in the T -dualized picture. We also analyze the system by using the effective field theory and compare the result with the boundary state approach. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Rolling tachyon with electric and magnetic fields: T -duality approach

Physical Review D , Volume 67 (8) – Apr 15, 2003
13 pages

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References (63)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2003 The American Physical Society
ISSN
1089-4918
DOI
10.1103/PhysRevD.67.086008
Publisher site
See Article on Publisher Site

Abstract

We study the decay of unstable D p -branes when the world-volume gauge field is turned on. We obtain the relevant D p -brane boundary state with electric and magnetic fields by boosting and rotating the rolling tachyon boundary state of a D ( p - 1 ) -brane and then T dualizing along one of the transverse directions. A simple recipe to turn on the gauge fields in the boundary state is given. We find that the effect of the electric field is to parametrically enhance the coupling of closed string oscillation modes along the electric field direction and provide an intuitive understanding of the result in the T -dualized picture. We also analyze the system by using the effective field theory and compare the result with the boundary state approach.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Apr 15, 2003

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